JP6903852B2 - Absorption heat exchange system - Google Patents

Description

The present invention relates to an absorption type heat exchange system, and more particularly to an absorption type heat exchange system in which heat is exchanged between two fluids so that the outlet temperature of the low temperature fluid is higher than the inlet temperature of the high temperature fluid.

Heat exchangers are widely used as devices for exchanging heat between hot and cold fluids. In a heat exchanger in which heat exchange is performed directly between two fluids, the outlet temperature of the cold fluid cannot be set higher than the inlet temperature of the hot fluid (see, for example, Patent Document 1).

Japanese Patent No. 5498809 (see FIG. 11 etc.)

One of the uses of heat exchangers is to recover exhaust heat. Since the exhaust heat is the heat that is discarded without being used, the outlet temperature of the low temperature fluid that recovers the exhaust heat and raises the temperature should be higher than the inlet temperature of the hot fluid including the exhaust heat. If it can be done, the range of utilization will be expanded.

In view of the above problems, the present invention provides an absorption type heat exchange system capable of making the outlet temperature of the fluid to be heated corresponding to the low temperature fluid higher than the inlet temperature of the heating source fluid corresponding to the high temperature fluid. The purpose is.

In order to achieve the above object, in the absorption type heat exchange system according to the first aspect of the present invention, for example, as shown in FIG. 1, the condensation released when the vapor Vg of the refrigerant condenses into the refrigerant liquid Vf. Condensing unit 40 that raises the temperature of the fluid FL to be heated by heat; the refrigerant liquid Vf is introduced from the condensing unit 40, and the latent heat of evaporation required when the introduced refrigerant liquid Vf evaporates to become the refrigerant steam Ve is used as a heating source. Evaporating part 20 that lowers the temperature of the heating source fluid FH by depriving it from the fluid FH; introduced refrigerant steam Ve from the evaporating part 20 and introduced the heated fluid FL whose temperature has risen in the condensing part 40. The absorption unit 10 that raises the temperature of the fluid FL to be heated introduced by the absorbed heat released when the absorption liquid Sa absorbs the steam Ve and becomes a dilute solution Sw whose concentration has decreased; and the rare solution Sw from the absorption unit 10. The temperature of the heating source fluid FH by removing the heat required to heat the introduced dilute solution Sw and remove the refrigerant Vg from the dilute solution Sw to obtain a concentrated solution Sa having an increased concentration from the heating source fluid FH. The regenerating section 30; the heated fluid FL before the temperature rises in the absorbing section 10 and the heating fluid FH which raises the temperature of the heated fluid FL before the temperature rises in the absorbing section 10. It is provided with a heat exchange unit 80 for exchanging heat between the heat exchange units; the absorption heat pump cycle of the absorption liquids Sa and Sw and the refrigerants Ve, Vf and Vg causes the absorption unit 10 to have a higher internal pressure and temperature than the regeneration unit 30. Therefore, the evaporating unit 20 is configured so that the internal pressure and temperature are higher than those of the condensing unit 40.

With this configuration, the temperature of the fluid to be heated flowing out of the absorption unit can be made higher than the temperature of the heating source fluid flowing into the evaporation unit.

Further, in the absorption heat exchange system according to the second aspect of the present invention, for example, as shown in FIG. 1, in the absorption heat exchange system 1 according to the first aspect of the present invention, the temperature at the evaporation unit 20 is set. The reduced heating source fluid FH is configured to be introduced into the regeneration unit 30 in order to heat the dilute solution Sw in the regeneration unit 30.

With such a configuration, it is possible to prevent the absorbing liquid from being excessively concentrated in the regenerated portion.

Further, in the absorption heat exchange system according to the third aspect of the present invention, for example, as shown in FIG. 1, in the absorption heat exchange system 1 according to the second aspect of the present invention, the heat exchange unit 80 is The regeneration unit 30 includes a first heat exchange unit 81 that introduces the heating source fluid FH after the temperature has dropped as a heating fluid.

With this configuration, the entire amount of the heating source fluid can be introduced into the evaporation section and the regeneration section, and the amount of heat input to the evaporation section and the regeneration section can be maximized.

Further, the absorption type heat exchange system according to the fourth aspect of the present invention is, for example, as shown in FIG. 2, in the absorption type heat exchange system 2 according to the second aspect or the third aspect of the present invention. The exchange unit 80 includes a second heat exchange unit 82 that introduces a part of the heat source fluids FHs branched from the heat source fluid FH before being introduced into the evaporation unit 20 as a heating fluid. ..

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be adjusted according to the branching ratio of the heating source fluid.

Further, the absorption type heat exchange system according to the fifth aspect of the present invention is shown in reference to FIG. 2, for example, in the absorption type heat exchange system 2 according to the fourth aspect of the present invention, in the absorption unit 10. The ratio of the flow rate of the heating source fluid FH flowing into the evaporation unit 20 to the flow rate of the heating source fluid FH flowing into the second heat exchange unit 82 so that the temperature of the fluid to be heated FL to be introduced becomes a predetermined temperature. Is set.

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be set to a predetermined temperature.

Further, the absorption type heat exchange system according to the sixth aspect of the present invention, for example, as shown with reference to FIG. 1, the absorption according to any one of the second to fifth aspects of the present invention. In the formula heat exchange system 1, the temperature of the heated fluid FL introduced into the condensing unit 40 is lower than the temperature of the heating source fluid FH flowing out from the regenerating unit 30, and the temperature of the heated fluid FL flowing out from the absorbing unit 10 is lower. The ratio of the flow rate of the fluid to be heated FL to the flow rate of the heat source fluid FH is set so as to be higher than the temperature of the heat source fluid FH flowing into the evaporation unit 20.

With this configuration, more heat held by the heating source fluid can be transferred to the fluid to be heated via the absorption heat pump cycle of the absorbing liquid and the refrigerant.

Further, the absorption heat exchange system according to the seventh aspect of the present invention is shown in, for example, with reference to FIG. 5, in the absorption heat exchange system 1A according to the first aspect of the present invention, in the regeneration unit 30. The heating source fluid FH after the temperature has dropped is configured to be introduced into the evaporation unit 20 in order to heat the refrigerant liquid Vf in the evaporation unit 20.

With this configuration, the amount of heat obtained by the fluid to be heated can be increased as compared with the case where the heating source fluid after the temperature has dropped in the evaporation section is introduced into the regeneration section.

Further, the absorption heat exchange system according to the eighth aspect of the present invention is shown by referring to FIG. 5, for example, in the absorption heat exchange system 1A according to the seventh aspect of the present invention, the heat exchange unit 80. Is configured to include a third heat exchange section 81 that introduces the heating source fluid FH after the temperature has dropped in the evaporation section 20 as a heating fluid.

With this configuration, the entire amount of the heating source fluid can be introduced into the evaporation section and the regeneration section, and the amount of heat input to the evaporation section and the regeneration section can be maximized.

Further, the absorption type heat exchange system according to the ninth aspect of the present invention is shown in, for example, with reference to FIG. 6, in the absorption type heat exchange system 2A according to the seventh aspect or the eighth aspect of the present invention. The heat exchange unit 80 includes a fourth heat exchange unit 82 that introduces a part of the heat source fluids FHs branched from the heat source fluid FH before being introduced into the regeneration unit 30 as a heating fluid. ing.

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be adjusted according to the branching ratio of the heating source fluid.

Further, the absorption type heat exchange system according to the tenth aspect of the present invention is shown in, for example, with reference to FIG. 6, in the absorption type heat exchange system 2A according to the ninth aspect of the present invention, the absorption unit 10 is used. The ratio of the flow rate of the heating source fluid FH flowing into the regeneration unit 30 to the flow rate of the heating source fluid FH flowing into the fourth heat exchange unit 82 so that the temperature of the fluid to be heated FL to be introduced becomes a predetermined temperature. Is set.

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be set to a predetermined temperature.

Further, the absorption type heat exchange system according to the eleventh aspect of the present invention, for example, with reference to FIG. 5, absorbs according to any one of the seventh to tenth aspects of the present invention. In the formula heat exchange system 1A, the temperature of the heated fluid FL introduced into the condensing unit 40 is lower than the temperature of the heating source fluid FH flowing out from the evaporating unit 20, and the temperature of the heated fluid FL flowing out from the absorbing unit 10 is lower. The ratio of the flow rate of the fluid to be heated FL to the flow rate of the heating source fluid FH is set so as to be higher than the temperature of the heating source fluid FH flowing into the regeneration unit 30.

With this configuration, more heat held by the heating source fluid can be transferred to the fluid to be heated via the absorption heat pump cycle of the absorbing liquid and the refrigerant.

Further, the absorption heat exchange system according to the twelfth aspect of the present invention is shown in, for example, with reference to FIG. 9, in the absorption heat exchange system 1B according to the first aspect of the present invention, in the evaporation unit 20. The heat source fluid FH to be introduced and the heat source fluid FH to be introduced into the regeneration unit 30 are configured to be introduced in parallel.

With this configuration, the amount of heat removed from the heating source fluid in the evaporation section and the amount of heat removed from the heating source fluid in the regeneration section can be made about the same. Further, it is possible to suppress excessive concentration of the absorbing liquid in the regenerated portion while increasing the amount of heat obtained by the fluid to be heated.

Further, the absorption type heat exchange system according to the thirteenth aspect of the present invention is shown by referring to FIG. 10, for example, in the absorption type heat exchange system 2B according to the twelfth aspect of the present invention, the heat exchange unit 80. Contains a fifth heat exchange unit 82 that introduces a part of the heat source fluids FHs branched from the heat source fluid FH before being introduced into the evaporation unit 20 and the regeneration unit 30 as a heating fluid. There is.

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be adjusted according to the branching ratio of the heating source fluid.

Further, the absorption type heat exchange system according to the fourteenth aspect of the present invention is shown in, for example, with reference to FIG. 10, in the absorption type heat exchange system 2B according to the thirteenth aspect of the present invention, the absorption unit 10 is used. The flow rate of the heating source fluid FH flowing into the evaporating section 20 and the regenerating section 30 and the heating source fluid FHs flowing into the fifth heat exchange section 82 so that the temperature of the fluid to be heated FL to be introduced becomes a predetermined temperature. The ratio with the flow rate is set.

With this configuration, the temperature of the fluid to be heated introduced into the absorption unit can be set to a predetermined temperature.

Further, the absorption heat exchange system according to the fifteenth aspect of the present invention, for example, with reference to FIG. 11, absorbs according to any one of the twelfth to fourteenth aspects of the present invention. In the heat exchange system 3B, the heat exchange unit 80 uses at least one of the heating source fluid FH after the temperature has dropped in the regenerating section 30 and the heating source fluid FH after the temperature has dropped in the evaporating section 20 as the heating fluid. It is configured to include a sixth heat exchange unit 81 to be introduced.

With this configuration, the heat possessed by at least one of the heat source fluid from which heat has been deprived in the evaporation unit and the heat source fluid from which heat has been deprived from the regeneration unit can be effectively utilized, and the heat utilization efficiency can be improved. Can be improved.

Further, the absorption type heat exchange system according to the sixteenth aspect of the present invention is shown in, for example, with reference to FIG. 11, in the absorption type heat exchange system 3B according to the thirteenth aspect or the fourteenth aspect of the present invention. The heat exchange unit 80 introduces at least one of the heat source fluid FH after the temperature has dropped in the regeneration unit 30 and the heat source fluid FH after the temperature has dropped in the evaporation unit 20 as the heating fluid. It is configured to include the exchange section 81; the heated fluid FL whose temperature has risen in the sixth heat exchange section 81 is introduced into the fifth heat exchange section 82, and the temperature is lowered in the fifth heat exchange section 82. The source fluids FHs are configured to be introduced into the sixth heat exchange section 81.

With this configuration, heat exchange between the fluid to be heated and the fluid to be heated can be efficiently performed.

Further, the absorption type heat exchange system according to the 17th aspect of the present invention, for example, with reference to FIG. 9, absorption according to any one of the 12th to 16th aspects of the present invention. In the formula heat exchange system 1B, the temperature of the heated fluid FL introduced into the condensing unit 40 is lower than the temperature of the heating source fluid FH flowing out from the evaporating unit 20 and the regenerating unit 30, and the heated fluid flowing out from the absorbing unit 10. The ratio of the flow rate of the fluid to be heated to the flow rate of the heating source fluid FH is set so that the temperature of the FL becomes higher than the temperature of the heating source fluid FH flowing into the evaporating section 20 and the regenerating section 30.

With this configuration, more heat held by the heating source fluid can be transferred to the fluid to be heated via the absorption heat pump cycle of the absorbing liquid and the refrigerant.

Further, the absorption heat exchange system according to the eighteenth aspect of the present invention is, for example, as shown in FIG. 4, the absorption heat according to any one of the first to seventeenth aspects of the present invention. The exchange system 4 includes a refrigerant heat exchanger 99 that exchanges heat between the refrigerant liquid Vf conveyed from the condensing unit 40 to the evaporating unit 20 and the heating fluid FH flowing out of the heat exchange unit 80.

With this configuration, the temperature of the heat source fluid flowing out of the absorption heat exchange system can be lowered, and the amount of heat recovered from the heat source fluid in the absorption heat exchange system can be increased.

According to the present invention, the temperature of the fluid to be heated flowing out from the absorbing portion can be made higher than the temperature of the heating source fluid flowing into the evaporating portion.

It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 3rd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 4th Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st modification of 1st Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st modification of 2nd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st modification of 3rd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on 1st modification of 4th Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd modification of 1st Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd modification of the 2nd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd modification of the 3rd Embodiment of this invention. It is a schematic system diagram of the absorption type heat exchange system which concerns on the 2nd modification of the 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each figure, members that are the same or correspond to each other are designated by the same or similar reference numerals, and duplicate description will be omitted.

First, the absorption heat exchange system 1 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic system diagram of the absorption heat exchange system 1. The absorption heat exchange system 1 utilizes the absorption heat pump cycle of the absorption liquid and the refrigerant to form the low temperature fluid FL and the high temperature fluid FH so that the outlet temperature of the low temperature fluid FL is higher than the inlet temperature of the high temperature fluid FH. It is a system that exchanges heat. Here, the low-temperature fluid FL is a fluid that is a target for raising the temperature in the absorption heat exchange system 1, and corresponds to a fluid to be heated. The high-temperature fluid FH is a fluid whose temperature drops in the absorption heat exchange system 1, and corresponds to a heating source fluid. The absorption heat exchange system 1 comprises an absorber 10, an evaporator 20, and a regenerator 30 that constitute a main device in which an absorption heat pump cycle of an absorption liquid S (Sa, Sw) and a refrigerant V (Ve, Vg, Vf) is performed. , And a condenser 40, and further includes a first heat exchange unit 81. The absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 correspond to an absorption unit, an evaporation unit, a regeneration unit, and a condensing unit, respectively.

In the present specification, in order to facilitate the distinction of the absorbent liquid on the heat pump cycle, it is referred to as "rare solution Sw" or "concentrated solution Sa" depending on the properties and the position on the heat pump cycle. Etc. are collectively referred to as "absorbent solution S". Similarly, regarding the refrigerant, in order to facilitate the distinction on the heat pump cycle, "evaporator refrigerant vapor Ve", "regenerator refrigerant vapor Vg", "refrigerant liquid Vf", etc., depending on the properties and the position on the heat pump cycle. However, when the properties and the like are unquestioned, they are collectively referred to as "refrigerant V". In the present embodiment, a LiBr aqueous solution is used as the absorbing liquid S (mixture of the absorbing agent and the refrigerant V), and water (H ₂ O) is used as the refrigerant V.

The absorber 10 has a heat transfer tube 12 that constitutes a flow path of the low-temperature fluid FL, and a concentrated solution supply device 13 that supplies the concentrated solution Sa to the surface of the heat transfer tube 12. The absorber 10 generates heat of absorption when the concentrated solution Sa is supplied from the concentrated solution supply device 13 to the surface of the heat transfer tube 12 and the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve to become a dilute solution Sw. The low-temperature fluid FL flowing through the heat transfer tube 12 receives the absorbed heat, and the low-temperature fluid FL is heated.

The evaporator 20 has a heat source tube 22 that constitutes a flow path of the high-temperature fluid FH inside the evaporator can body 21. The evaporator 20 does not have a nozzle for spraying the refrigerant liquid Vf inside the evaporator can body 21. Therefore, the heat source pipe 22 is arranged so as to be immersed in the refrigerant liquid Vf stored in the evaporator can body 21 (full-liquid evaporator). The evaporator 20 is configured so that the refrigerant liquid Vf around the heat source pipe 22 evaporates with the heat of the high-temperature fluid FH flowing in the heat source pipe 22 to generate the evaporator refrigerant vapor Ve. A refrigerant liquid pipe 45 for supplying the refrigerant liquid Vf is connected to the evaporator can body 21 in the evaporator can body 21.

The absorber 10 and the evaporator 20 communicate with each other. By communicating the absorber 10 and the evaporator 20, the evaporator refrigerant vapor Ve generated in the evaporator 20 can be supplied to the absorber 10.

The regenerator 30 has a heat source tube 32 for flowing a high-temperature fluid FH for heating the dilute solution Sw inside, and a dilute solution supply device 33 for supplying the dilute solution Sw to the surface of the heat source tube 32. The high-temperature fluid FH flowing in the heat source pipe 32 is the high-temperature fluid FH after flowing in the heat source pipe 22 of the evaporator 20. The heat source pipe 22 of the evaporator 20 and the heat source pipe 32 of the regenerator 30 are connected by a high temperature fluid connecting pipe 25 through which the high temperature fluid FH flows. A high-temperature fluid discharge pipe 39 is connected to an end of the heat source pipe 32 of the regenerator 30 opposite to the end to which the high-temperature fluid connecting pipe 25 is connected. The high temperature fluid discharge pipe 39 is a pipe constituting a flow path for guiding the high temperature fluid FH to the outside of the system. In the regenerator 30, the dilute solution Sw supplied from the dilute solution supply device 33 is heated by the high-temperature fluid FH, so that the refrigerant V evaporates from the dilute solution Sw to generate a concentrated solution Sa having an increased concentration. It is configured in. The refrigerant V evaporated from the dilute solution Sw is configured to move to the condenser 40 as the regenerator refrigerant vapor Vg.

The condenser 40 has a heat transfer tube 42 through which the low-temperature fluid FL flows inside the condenser can body 41. The low-temperature fluid FL flowing in the heat transfer tube 42 then flows in the heat transfer tube 12 of the absorber 10. The heat transfer tube 42 of the condenser 40 and the heat transfer tube 12 of the absorber 10 are connected by a low temperature fluid connecting tube 15 through which the low temperature fluid FL flows. The condenser 40 introduces the regenerator refrigerant vapor Vg generated in the regenerator 30, and the low-temperature fluid FL flowing in the heat transfer tube 42 receives the heat of condensation released when this is condensed into the refrigerant liquid Vf. , The low temperature fluid FL is configured to be heated. The regenerator 30 and the condenser 40 are integrally formed with the can body of the regenerator 30 and the condenser can body 41 so as to communicate with each other. By communicating the regenerator 30 and the condenser 40, the regenerator refrigerant vapor Vg generated in the regenerator 30 can be supplied to the condenser 40.

The portion of the regenerator 30 in which the concentrated solution Sa is stored and the concentrated solution supply device 13 of the absorber 10 are connected by a concentrated solution tube 35 through which the concentrated solution Sa flows. A solution pump 35p for pumping the concentrated solution Sa is provided in the concentrated solution tube 35. The portion of the absorber 10 in which the dilute solution Sw is stored and the dilute solution supply device 33 are connected by a dilute solution tube 36 through which the dilute solution Sw flows. A solution heat exchanger 38 for exchanging heat between the concentrated solution Sa and the dilute solution Sw is provided in the concentrated solution tube 35 and the dilute solution tube 36. The portion of the condenser 40 in which the refrigerant liquid Vf is stored and the evaporator can body 21 are connected by a refrigerant liquid pipe 45 through which the refrigerant liquid Vf flows. The refrigerant liquid pipe 45 is provided with a refrigerant pump 46 that pumps the refrigerant liquid Vf.

The first heat exchange unit 81 is arranged in the low-temperature fluid connecting pipe 15 and the high-temperature fluid discharge pipe 39, and heat is generated by the low-temperature fluid FL flowing through the low-temperature fluid connecting pipe 15 and the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39. It is configured to allow replacement. The first heat exchange unit 81 is a form of the heat exchange unit 80 and corresponds to the first heat exchange unit. The first heat exchanger 81 is typically composed of a shell-and-tube heat exchanger, but may be a device such as a plate heat exchanger that exchanges heat between two fluids.

In the absorption type heat exchange system 1, during steady operation, the pressure and temperature inside the absorber 10 are higher than the pressure and temperature inside the regenerator 30, and the pressure and temperature inside the evaporator 20 are higher than those inside the condenser 40. It will be higher than the internal pressure and temperature. In the absorption heat exchange system 1, the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 are configured as a second-class absorption heat pump.

Subsequently, with reference to FIG. 1, the operation of the absorption heat exchange system 1 will be described. First, the absorption heat pump cycle on the refrigerant side will be described. The condenser 40 receives the regenerator refrigerant vapor Vg evaporated by the regenerator 30, and the regenerator refrigerant vapor Vg is cooled and condensed by the low-temperature fluid FL flowing through the heat transfer tube 42 to become the refrigerant liquid Vf. At this time, the temperature of the low-temperature fluid FL rises due to the heat of condensation released when the regenerator refrigerant vapor Vg condenses. The condensed refrigerant liquid Vf is sent to the evaporator can body 21 by the refrigerant pump 46. The refrigerant liquid Vf sent to the evaporator can body 21 is heated by the high-temperature fluid FH flowing in the heat source pipe 22 and evaporates to become the evaporator refrigerant steam Ve. At this time, the temperature of the high-temperature fluid FH is lowered by being deprived of heat by the refrigerant liquid Vf. The evaporator refrigerant vapor Ve generated in the evaporator 20 moves to the absorber 10 communicating with the evaporator 20.

Next, the absorption heat pump cycle on the solution side will be described. In the absorber 10, the concentrated solution Sa is supplied from the concentrated solution supply device 13, and the supplied concentrated solution Sa absorbs the evaporator refrigerant vapor Ve that has moved from the evaporator 20. The concentration of the concentrated solution Sa that has absorbed the evaporator refrigerant vapor Ve decreases to become a dilute solution Sw. In the absorber 10, absorption heat is generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve. The absorbed heat heats the low-temperature fluid FL flowing through the heat transfer tube 12, and the temperature of the low-temperature fluid FL rises. The low-temperature fluid FL flowing through the heat transfer tube 12 has passed through the heat transfer tube 42 of the condenser 40 and the first heat exchange section 81. The concentration of the concentrated solution Sa that has absorbed the evaporator refrigerant vapor Ve in the absorber 10 decreases to become a dilute solution Sw, which is stored in the lower part of the absorber 10. The stored dilute solution Sw flows through the dilute solution tube 36 toward the regenerator 30 due to the difference in internal pressure between the absorber 10 and the regenerator 30, and heats with the concentrated solution Sa in the solution heat exchanger 38 to raise the temperature. It drops to reach the regenerator 30.

The dilute solution Sw sent to the regenerator 30 is supplied from the dilute solution supply device 33, heated by the high-temperature fluid FH flowing through the heat source tube 32, and the refrigerant in the supplied dilute solution Sw evaporates to become a concentrated solution Sa. , Stored in the lower part of the regenerator 30. At this time, the temperature of the high-temperature fluid FH is lowered by being deprived of heat by the dilute solution Sw. The high-temperature fluid FH flowing through the heat source pipe 32 has passed through the heat source pipe 22 of the evaporator 20. The refrigerant V evaporated from the dilute solution Sw moves to the condenser 40 as the regenerator refrigerant vapor Vg. The concentrated solution Sa stored in the lower part of the regenerator 30 is pumped by the solution pump 35p to the concentrated solution supply device 13 of the absorber 10 via the concentrated solution pipe 35. The concentrated solution Sa flowing through the concentrated solution tube 35 exchanges heat with the dilute solution Sw in the solution heat exchanger 38, flows into the absorber 10 after the temperature rises, is supplied from the concentrated solution supply device 13, and so on. Repeat the cycle of.

Changes in temperature of the high-temperature fluid FH and the low-temperature fluid FL in the process in which the absorption liquid S and the refrigerant V perform the absorption heat pump cycle as described above will be described with reference to specific examples. The high-temperature fluid FH that has flowed into the heat source pipe 22 of the evaporator 20 at 95 ° C. is deprived of heat by the refrigerant liquid Vf, and the temperature drops to 90 ° C. The high-temperature fluid FH flowing out of the evaporator 20 flows through the high-temperature fluid connecting pipe 25 and then flows into the heat source pipe 32 of the regenerator 30 at 90 ° C. The temperature of the high-temperature fluid FH flowing into the heat source tube 32 drops to 85 ° C. due to the heat being taken away by the dilute solution Sw. The high-temperature fluid FH whose temperature has dropped in the regenerator 30 flows out of the regenerator 30 at 85 ° C., flows through the high-temperature fluid discharge pipe 39, and flows into the first heat exchange section 81.

On the other hand, the low temperature fluid FL flowing into the heat transfer tube 42 of the condenser 40 at 32 ° C. obtains the heat of condensation released when the regenerator refrigerant vapor Vg condenses, and the temperature rises to 57 ° C. The low-temperature fluid FL flowing out of the condenser 40 flows through the low-temperature fluid connecting pipe 15 and flows into the first heat exchange section 81. In the first heat exchange section 81, heat exchange is performed between the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 and the low temperature fluid FL flowing through the low temperature fluid connecting pipe 15, and the high temperature fluid FH at 85 ° C. is heated to 80 ° C. The temperature of the low temperature fluid FL at 57 ° C. rises to 82 ° C. The high-temperature fluid FH whose temperature has dropped to 80 ° C. continues to flow through the high-temperature fluid discharge pipe 39 and is discharged from the absorption heat exchange system 1. The low-temperature fluid FL whose temperature has risen to 82 ° C. flows into the heat transfer tube 12 of the absorber 10. The temperature of the low-temperature fluid FL flowing into the heat transfer tube 12 rises to 107 ° C. by obtaining the absorbed heat generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve. The low-temperature fluid FL whose temperature has risen in the absorber 10 flows out of the absorber 10 at 107 ° C. and is supplied to the place of use.

In the absorption heat exchange system 1, the ratio of the flow rate of the low temperature fluid FL to the flow rate of the high temperature fluid FH is determined in order to establish the above-mentioned temperature relationship. In the present embodiment, the flow rate of the low temperature fluid FL is set to about 1/5 of the flow rate of the high temperature fluid FH. In other words, the flow rate ratio of the low temperature fluid FL and the high temperature fluid FH is about 1: 5. This flow rate ratio may be fixed by using a pipe, an orifice, or the like of a size adopted according to a predetermined value, or may be configured to be automatically or manually adjustable by using a valve or the like. In this way, the temperature of the low temperature fluid FL flowing out of the absorption heat exchange system 1 (107 ° C.) can be made higher than the temperature of the high temperature fluid FH flowing into the absorption heat exchange system 1 (95 ° C.). .. Here, the absorption heat exchange system 1 can be regarded as one heat exchanger that exchanges heat between the high temperature fluid FH and the low temperature fluid FL. In a conventional heat exchanger, if the flow rate of a low-temperature fluid is made smaller than the flow rate of a high-temperature fluid, the outlet temperature of the low-temperature fluid can be brought close to the inlet temperature of the high-temperature fluid. It could not be higher than the inlet temperature. In this regard, in the absorption heat exchange system 1 according to the present embodiment, as described above, the temperature of the low temperature fluid FL flowing out of the absorption heat exchange system 1 is transferred to the high temperature fluid FH flowing into the absorption heat exchange system 1. Can be higher than the temperature of.

As described above, according to the absorption type heat exchange system 1 according to the present embodiment, absorption in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 exhibiting the functions of the type 2 absorption heat pump. The heat exchange between the high temperature fluid FH and the low temperature fluid FL is indirectly performed via the absorption heat pump cycle between the liquid S and the refrigerant V, and the high temperature fluid FH and the low temperature fluid FL are directly exchanged with each other in the first heat exchange section 81. The temperature of the low-temperature fluid FL flowing out of the absorption-type heat exchange system 1 is higher than the temperature of the inflowing high-temperature fluid FH after the low-temperature fluid FL takes heat from the high-temperature fluid FH by performing heat exchange. can do. Further, in the absorption heat exchange system 1, the low-temperature fluid FL that has passed through the condenser 40 is introduced into the absorber 10 to raise the temperature of the low-temperature fluid FL, so that the cooling water required for the second-class absorption heat pump is used. Is no longer required, and incidental equipment (cooling water pump, cooling tower, etc.) is no longer required. Further, in the absorption heat exchange system 1, unlike the type 2 absorption heat pump, there is no heat to be discarded in the cooling water, and the heat of condensation in the condenser 40 is used for heating the low temperature fluid FL, so that the efficiency (COP) is high. It is higher than the Type 2 absorption heat pump (about twice as large) and can be made equivalent to a large heat exchanger. Further, in the absorption heat exchange system 1, the temperature of the high-temperature fluid FH flowing into the regenerator 30 becomes lower by the amount of heat consumed by the evaporator 20, so that the concentration of the absorption liquid S in the regenerator 30 increases. It is possible to prevent the absorption liquid S from being excessively concentrated by suppressing it.

Next, the absorption heat exchange system 2 according to the second embodiment of the present invention will be described with reference to FIG. FIG. 2 is a schematic system diagram of the absorption heat exchange system 2. The absorption heat exchange system 2 differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. In the absorption heat exchange system 2, a high-temperature fluid detour pipe 29 that joins the partial high-temperature fluid FHs obtained by branching a part of the high-temperature fluid FH before being introduced into the evaporator 20 into the high-temperature fluid FH flowing out of the regenerator 30 is provided. It is provided. One end of the high temperature fluid detour pipe 29 is connected to a high temperature fluid introduction pipe 24 that introduces the high temperature fluid FH into the heat source pipe 22. The other end of the high temperature fluid detour pipe 29 is connected to the high temperature fluid discharge pipe 39. In the present embodiment, the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 is discharged to the outside of the system without passing through the heat exchange unit 80. Further, the absorption heat exchange system 2 is provided with a second heat exchange unit 82 in place of the first heat exchange unit 81 (see FIG. 1). The second heat exchange unit 82 is a device that exchanges heat between the low-temperature fluid FL flowing through the low-temperature fluid connecting pipe 15 and the partial high-temperature fluid FHs flowing through the high-temperature fluid bypass pipe 29. The second heat exchange section 82 is arranged in the low temperature fluid connecting pipe 15 and the high temperature fluid detour pipe 29. The second heat exchange unit 82 is a form of the heat exchange unit 80 and corresponds to the second heat exchange unit. The second heat exchanger 82 is typically composed of a shell-and-tube heat exchanger, but may be a device such as a plate heat exchanger that exchanges heat between two fluids. The configuration of the absorption heat exchange system 2 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

The operation of the absorption heat exchange system 2 configured as described above is as follows. The absorption heat pump cycle of the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 operates in the same manner as in the absorption heat exchange system 1 (see FIG. 1). The high-temperature fluid FH flowing through the high-temperature fluid introduction pipe 24 toward the evaporator 20 is partially branched and flows into the high-temperature fluid bypass pipe 29 as partial high-temperature fluid FHs, and the remaining high-temperature fluid FH flows into the heat source pipe 22. .. The high-temperature fluid FH that has flowed into the heat source pipe 22 is deprived of heat by the refrigerant liquid Vf, the temperature drops, flows out of the evaporator 20, flows through the high-temperature fluid connecting pipe 25, and then flows into the heat source pipe 32 of the regenerator 30. Then, in the regenerator 30, heat is taken by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high-temperature fluid FH that has flowed from the high-temperature fluid introduction pipe 24 into the high-temperature fluid bypass pipe 29 flows into the second heat exchange section 82. On the other hand, the low-temperature fluid FL that has flowed into the heat transfer tube 42 of the condenser 40 obtains the heat of condensation released when the regenerator refrigerant vapor Vg condenses, and the temperature rises. It flows into the part 82. In the second heat exchange section 82, heat exchange is performed between the partial high-temperature fluid FHs flowing through the high-temperature fluid bypass pipe 29 and the low-temperature fluid FL flowing through the low-temperature fluid connecting pipe 15, and the temperature of the partial high-temperature fluid FHs drops. The temperature of the low temperature fluid FL rises. The partial high-temperature fluid FHs whose temperature has dropped in the second heat exchange section 82 merge with the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 via the high-temperature fluid detour pipe 29, and are discharged from the absorption heat exchange system 2. The low-temperature fluid FL whose temperature has risen in the second heat exchange section 82 flows into the heat transfer tube 12 of the absorber 10, and absorbs heat generated when the concentrated solution Sa absorbs the evaporator refrigerant vapor Ve in the absorber 10. As a result, the temperature rises and the absorber 10 flows out and is supplied to the place of use. As described above, according to the absorption heat exchange system 2, the ratio of the flow rate of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 to the flow rate flowing into the heat source pipe 22 and the flow rate flowing into the high temperature fluid bypass pipe 29 Accordingly, the temperature of the low-temperature fluid FL introduced into the heat transfer tube 12 of the absorber 10 can be adjusted, so that the temperature of the low-temperature fluid FL flowing out of the absorber 10 can be increased. In other words, the flow rate of the high temperature fluid FH flowing into the heat source pipe 22 and the high temperature flowing into the high temperature fluid bypass pipe 29 so that the temperature of the low temperature fluid FL introduced into the heat transfer tube 12 of the absorber 10 becomes a predetermined temperature. The ratio of the fluid FH to the flow rate can be set. The flow rate ratio in this case may be fixed by using a pipe, an orifice, or the like of a size adopted in accordance with a predetermined value for each of the heat source pipe 22 and the high temperature fluid detour pipe 29, and each pipe 22 may be fixed. , 29 may be configured to be adjustable automatically or manually by using a valve or the like arranged at any position.

Next, the absorption heat exchange system 3 according to the third embodiment of the present invention will be described with reference to FIG. FIG. 3 is a schematic system diagram of the absorption heat exchange system 3. In the absorption heat exchange system 3, in addition to the configuration of the absorption heat exchange system 1 (see FIG. 1), the high temperature fluid detour pipe 29 and the second heat exchange unit 82 included in the absorption heat exchange system 2 (see FIG. 2) are provided. Is provided. One end of the high temperature fluid detour pipe 29 is connected to the high temperature fluid introduction pipe 24, and the other end is connected to the high temperature fluid discharge pipe 39 on the upstream side of the first heat exchange section 81. The second heat exchange section 82 is arranged in the high temperature fluid bypass pipe 29 and the low temperature fluid connecting pipe 15 on the downstream side of the first heat exchange section 81, and the partial high temperature fluid FHs flowing through the high temperature fluid bypass pipe 29. It is configured to allow heat exchange between the first heat exchange unit 81 and the low temperature fluid FL flowing through the low temperature fluid connecting pipe 15. The configuration of the absorption heat exchange system 3 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

The operation of the absorption heat exchange system 3 configured as described above is as follows. The absorption heat pump cycle of the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 operates in the same manner as in the absorption heat exchange system 1 (see FIG. 1). A part of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 toward the evaporator 20 branches and flows into the high temperature fluid bypass pipe 29, and the rest flows into the heat source pipe 22. The high-temperature fluid FH that has flowed into the heat source pipe 22 is deprived of heat by the refrigerant liquid Vf, the temperature drops, flows out of the evaporator 20, flows through the high-temperature fluid connecting pipe 25, and then flows into the heat source pipe 32 of the regenerator 30. Then, in the regenerator 30, heat is taken by the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. On the other hand, the temperature of the low-temperature fluid FL flowing into the heat transfer tube 42 of the condenser 40 rises due to the heat of condensation released when the regenerator refrigerant vapor Vg condenses, and the first flow flows out after exiting the condenser 40. The temperature rises due to heat exchange with the high temperature fluid FH in the heat exchange unit 81, and the temperature rises due to heat exchange with the partial high temperature fluid FHs in the second heat exchange unit 82 that flows in after exiting the first heat exchange unit 81. After that, it flows out from the second heat exchange section 82 and flows into the heat transfer tube 12 of the absorber 10, and obtains the absorbed heat generated when the concentrated solution Sa absorbs the evaporator refrigerant steam Ve in the absorber 10 and obtains the temperature. Ascends and flows out of the absorber 10 and is supplied to the place of use. The partial high-temperature fluids FHs that have flowed from the high-temperature fluid introduction pipe 24 into the high-temperature fluid bypass pipe 29 flow into the second heat exchange section 82 and exchange heat with the low-temperature fluid FL to lower the temperature, and then the temperature drops. It merges with the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 and flows into the first heat exchange section 81, and heat exchange is performed with the low-temperature fluid FL in the first heat exchange section 81 to lower the temperature. 1 It flows out from the heat exchange unit 81 and is discharged from the absorption type heat exchange system 3. As described above, according to the absorption heat exchange system 3, the temperature of the low temperature fluid FL flowing into the heat transfer tube 12 of the absorber 10 is higher than that of the absorption heat exchange system 1 (see FIG. 1). Therefore, the temperature of the low-temperature fluid FL flowing out of the absorber 10 can be raised.

Next, the absorption heat exchange system 4 according to the fourth embodiment of the present invention will be described with reference to FIG. FIG. 4 is a schematic system diagram of the absorption heat exchange system 4. The absorption heat exchange system 4 differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. The absorption heat exchange system 4 includes a refrigerant heat exchanger 99 in addition to the configuration of the absorption heat exchange system 1 (see FIG. 1). The refrigerant heat exchanger 99 is a device that exchanges heat between the refrigerant liquid Vf heading from the condenser 40 to the evaporator 20 and the high-temperature fluid FH flowing out of the first heat exchange unit 81. The refrigerant heat exchanger 99 is arranged in the refrigerant liquid pipe 45 on the downstream side of the refrigerant pump 46 and the high temperature fluid discharge pipe 39 on the downstream side of the first heat exchange section 81. A shell-and-tube type or plate type heat exchanger is used as the refrigerant heat exchanger 99. The configuration of the absorption heat exchange system 4 other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

The operation of the absorption heat exchange system 4 configured as described above is as follows. The absorption heat pump cycle between the absorber S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 is an absorption heat pump cycle except for the temperature change of the refrigerant liquid Vf from the condenser 40 to the evaporator 20. It operates in the same manner as the exchange system 1 (see FIG. 1). The flow path and temperature change of the high temperature fluid FH operate in the same manner as the absorption heat exchange system 1 (see FIG. 1) until they flow out from the first heat exchange unit 81. The flow path and temperature change of the low temperature fluid FL operate in the same manner as in the absorption heat exchange system 1 (see FIG. 1). Then, in the absorption type heat exchange system 4 including the refrigerant heat exchanger 99, heat is exchanged between the refrigerant liquid Vf heading from the condenser 40 to the evaporator 20 and the high temperature fluid FH flowing out from the first heat exchange section 81. Is performed, the temperature of the refrigerant liquid Vf rises, and the temperature of the high-temperature fluid FH decreases. Since the temperature of the refrigerant liquid Vf flowing out of the refrigerant heat exchanger 99 rises and flows into the evaporator 20, the amount of heat required for evaporation in the evaporator 20 can be suppressed, and the temperature drops accordingly. The amount of heat possessed by the high-temperature fluid FH in which the amount of heat is suppressed can be used for heat exchange in the first heat exchange unit 81, and the temperature of the low-temperature fluid FL flowing into the absorber 10 can be raised. On the other hand, the temperature of the high-temperature fluid FH flowing out of the refrigerant heat exchanger 99 drops and is discharged from the absorption-type heat exchange system 4, so that the amount of heat recovered by the high-temperature fluid FH in the absorption-type heat exchange system 4 can be increased. it can.

The refrigerant heat exchanger 99 can also be installed in the absorption heat exchange system 2 (see FIG. 2) or the absorption heat exchange system 3 (see FIG. 3).

Next, with reference to FIG. 5, the absorption heat exchange system 1A according to the first modification of the first embodiment of the present invention will be described. FIG. 5 is a schematic system diagram of the absorption heat exchange system 1A. The absorption heat exchange system 1A differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. The main difference is that the flow direction of the high temperature fluid FH flows through the regenerator 30 after flowing through the evaporator 20 in the absorption heat exchange system 1 (see FIG. 1), whereas the absorption according to this modification. In the type heat exchange system 1A, after flowing through the regenerator 30, it flows through the evaporator 20. Along with this difference, the high temperature fluid introduction pipe 24 is connected to the end opposite to the end to which the high temperature fluid connecting pipe 25 of the heat source pipe 32 of the regenerator 30 is connected, and the high temperature fluid discharge pipe 39 is connected. The high temperature fluid connecting pipe 25 of the heat source pipe 22 of the evaporator 20 is connected to the end opposite to the connected end. In the absorption heat exchange system 1A, the first heat exchange unit 81 corresponds to the third heat exchange unit. The configuration of the absorption heat exchange system 1A other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

In the absorption heat exchange system 1A configured as described above, the absorption heat pump cycle between the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 is the absorption heat exchange system 1. It works in the same manner as (see FIG. 1). The flow path and temperature change of the high temperature fluid FH are as follows. The high temperature fluid FH first flows into the heat source pipe 32 of the regenerator 30. The temperature of the high-temperature fluid FH flowing into the heat source tube 32 drops due to the heat being taken away by the dilute solution Sw. The high-temperature fluid FH flowing out of the regenerator 30 flows through the high-temperature fluid connecting pipe 25 and then flows into the heat source pipe 22 of the evaporator 20. The high-temperature fluid FH that has flowed into the heat source pipe 22 loses heat to the refrigerant liquid Vf, and the temperature drops. The high-temperature fluid FH whose temperature has dropped in the evaporator flows out of the evaporator 20, flows through the high-temperature fluid discharge pipe 39, and flows into the first heat exchange section 81. After that, it operates in the same manner as the absorption heat exchange system 1 (see FIG. 1). The flow path and temperature change of the low temperature fluid FL operate in the same manner as in the absorption heat exchange system 1 (see FIG. 1). In the absorption type heat exchange system 1A, the temperature of the low temperature fluid FL introduced into the condenser 40 is lower than the temperature of the high temperature fluid FH flowing out from the evaporator 20, and the temperature of the low temperature fluid FL flowing out from the absorber 10 is regenerated. The ratio of the flow rate of the high temperature fluid FH to the flow rate of the low temperature fluid FL is determined so as to be higher than the temperature of the high temperature fluid FH flowing into the vessel 30, for example, the flow rate of the low temperature fluid FL is about the flow rate of the high temperature fluid FH. It can be 1/5. In the absorption heat exchange system 1A, the temperature of the high temperature fluid FH flowing into the regenerator 30 flows into the regenerator 30 after passing through the evaporator 20 as in the absorption heat exchange system 1 (see FIG. 1). Therefore, the concentration of the absorption fluid S in the regenerator 30 can be increased, and the output can be increased. Further, in the absorption heat exchange system 1A, the temperature of the high temperature fluid FH flowing into the evaporator 20 is lower than that in the case of the absorption heat exchange system 1 (see FIG. 1). The acting internal pressure can be lowered. When the internal pressure acting on the evaporator 20 and the absorber 10 exceeds the atmospheric pressure, the withstand pressure of the can body constituting the evaporator 20 and the absorber 10 may be lowered by lowering the internal pressure.

Next, the absorption heat exchange systems 2A and 3A according to the first modification of the second embodiment and the third embodiment of the present invention will be described with reference to FIGS. 6 and 7. FIG. 6 is a schematic system diagram of the absorption heat exchange system 2A. FIG. 7 is a schematic system diagram of the absorption heat exchange system 3A. The main points of the absorption heat exchange systems 2A and 3A are that in the configuration of the absorption heat exchange system 2 (see FIG. 2) and 3 (see FIG. 3), the flow direction of the high temperature fluid FH is the absorption heat exchange system 1A (see FIG. 5). (See), after flowing through the regenerator 30, it flows through the evaporator 20. Along with this, in the absorption type heat exchange systems 2A and 3A, as in the absorption type heat exchange system 1A (see FIG. 5), the high temperature fluid introduction pipe 24 is the high temperature fluid connecting pipe 25 of the heat source pipe 32 of the regenerator 30. It is connected to the end opposite to the connected end, and the high temperature fluid discharge pipe 39 is the end opposite to the end to which the high temperature fluid connecting pipe 25 of the heat source pipe 22 of the evaporator 20 is connected. It is connected to the. In the absorption heat exchange systems 2A and 3A, the second heat exchange unit 82 corresponds to the fourth heat exchange unit. Further, in the absorption heat exchange system 3A, the first heat exchange unit 81 corresponds to the third heat exchange unit. The configuration of the absorption heat exchange system 2A other than the above is the same as that of the absorption heat exchange system 2 (see FIG. 2). The configuration of the absorption heat exchange system 3A other than the above is the same as that of the absorption heat exchange system 3 (see FIG. 3).

In the absorption heat exchange systems 2A and 3A configured in this manner, the absorption heat exchange system 2 (see FIG. 2), except that the high temperature fluid FH flows through the evaporator 20 after flowing through the regenerator 30, respectively. It works in the same manner as in 3 (see FIG. 3). According to the absorption type heat exchange systems 2A and 3A, the absorber corresponds to the ratio of the flow rate of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 to the flow rate flowing into the heat source pipe 32 and the flow rate flowing into the high temperature fluid bypass pipe 29. Since the temperature of the low-temperature fluid FL introduced into the heat transfer tube 12 of 10 can be adjusted, the temperature of the low-temperature fluid FL flowing out of the absorber 10 can be increased. In other words, the flow rate of the high temperature fluid FH flowing into the heat source tube 32 and the portion flowing into the high temperature fluid bypass pipe 29 so that the temperature of the low temperature fluid FL introduced into the heat transfer tube 12 of the absorber 10 becomes a predetermined temperature. The ratio with the flow rate of the high temperature fluid FHs can be set. The flow rate ratio in this case may be fixed by using a pipe, an orifice, or the like of a size adopted in accordance with a predetermined value for each of the heat source pipe 32 and the high temperature fluid detour pipe 29, and each pipe 32 may be fixed. , 29 may be configured to be adjustable automatically or manually by using a valve or the like arranged at any position.

Next, with reference to FIG. 8, the absorption heat exchange system 4A according to the first modification of the fourth embodiment of the present invention will be described. FIG. 8 is a schematic system diagram of the absorption heat exchange system 4A. The main point of the absorption heat exchange system 4A is that in the configuration of the absorption heat exchange system 4 (see FIG. 4), the flow direction of the high temperature fluid FH is the regenerator 30 as in the absorption heat exchange system 1A (see FIG. 5). It is designed to flow through the evaporator 20 after flowing. Along with this, in the absorption type heat exchange system 4A, as in the absorption type heat exchange system 1A (see FIG. 5), the high temperature fluid introduction pipe 24 is connected to the high temperature fluid connecting pipe 25 of the heat source pipe 32 of the regenerator 30. It is connected to the end on the opposite side to the end, and the high temperature fluid discharge pipe 39 is connected to the end on the opposite side to the end to which the high temperature fluid connecting pipe 25 of the heat source pipe 22 of the evaporator 20 is connected. There is. In the absorption heat exchange system 4A, the first heat exchange unit 81 corresponds to the third heat exchange unit. The configuration of the absorption heat exchange system 4A other than the above is the same as that of the absorption heat exchange system 4 (see FIG. 4).

The absorption heat exchange system 4A configured in this way operates in the same manner as the absorption heat exchange system 4 (see FIG. 4) except that the high temperature fluid FH flows through the regenerator 30 and then through the evaporator 20. .. According to the absorption type heat exchange system 4A, the temperature of the refrigerant liquid Vf flowing out from the refrigerant heat exchanger 99 rises and flows into the evaporator 20, so that the amount of heat required for evaporation in the evaporator 20 is suppressed. The amount of heat possessed by the high-temperature fluid FH whose temperature drop is suppressed accordingly can be used for heat exchange in the first heat exchange section 81, and the temperature of the low-temperature fluid FL flowing into the absorber 10 can be used. However, the high temperature fluid FH flowing out of the refrigerant heat exchanger 99 is discharged from the absorption heat exchange system 4A due to a decrease in temperature, and the high temperature fluid FH in the absorption heat exchange system 4A is discharged. The amount of heat recovered can be increased. The refrigerant heat exchanger 99 can also be installed in the absorption heat exchange system 2A (see FIG. 6) or the absorption heat exchange system 3A (see FIG. 7).

Next, with reference to FIG. 9, the absorption heat exchange system 1B according to the second modification of the first embodiment of the present invention will be described. FIG. 9 is a schematic system diagram of the absorption heat exchange system 1B. The absorption heat exchange system 1B differs from the absorption heat exchange system 1 (see FIG. 1) mainly in the following points. The main difference is that the flow of the high temperature fluid FH flows through the regenerator 30 after flowing through the evaporator 20 in the absorption heat exchange system 1 (see FIG. 1), whereas it flows through the regenerator 30 in the absorption type heat exchange system 1 (see FIG. 1). In the heat exchange system 1B, the evaporator 20 and the regenerator 30 flow in parallel. By allowing the high-temperature fluid FH to flow in parallel with the evaporator 20 and the regenerator 30, when the high-temperature fluid FH is steam, the state of condensation of steam in the heat source tube 22 of the evaporator 20 and the state of condensation of steam in the regenerator 30 and the regenerator 30 The state of condensation of steam in the heat source tube 32 can be brought close to the same state, and the absorption heat pump cycle can be operated stably.

In the absorption heat exchange system 1B, the regenerator high-temperature fluid introduction pipe 34 is branched from the high-temperature fluid introduction pipe 24, and the other end of the regenerator high-temperature fluid introduction pipe 34 is connected to the heat source pipe 32 of the regenerator 30. .. One end of the evaporator high temperature fluid discharge pipe 28 is connected to the end of the heat source pipe 22 of the evaporator 20 opposite to the end to which the high temperature fluid introduction pipe 24 is connected. The other end of the evaporator high temperature fluid discharge pipe 28 is connected to the high temperature fluid discharge pipe 39. In the absorption heat exchange system 1B, the high temperature fluid connecting pipe 25 (see FIG. 1) is not provided. Further, the high temperature fluid discharge pipe 39 is not guided to the first heat exchange section 81 (see FIG. 1), and the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 is discharged to the outside of the absorption heat exchange system 1B. It has become like. In this modification, it is not the fluid derived from the high temperature fluid FH but the external heat source fluid FE introduced from the outside that exchanges heat with the low temperature fluid FL flowing out from the condenser 40. In this way, when the high-temperature fluid FH is steam, it is possible to avoid a heat shortage that may occur when the condensate of the high-temperature fluid FH flowing out of the evaporator 20 and the regenerator 30 is used for heat exchange with the low-temperature fluid FL. Can be done. In this modification, an external heat exchange unit 88 is provided in place of the first heat exchange unit 81 (see FIG. 1). The external heat exchange unit 88 is configured to exchange heat between the low-temperature fluid FL flowing out of the condenser 40 and the external heat source fluid FE, and is a form of the heat exchange unit 80. The external heat exchange unit 88 is arranged in the low temperature fluid connecting pipe 15 and the external heat source fluid pipe 89. The external heat source fluid pipe 89 is a pipe that constitutes a flow path through which the external heat source fluid FE flows. The configuration of the absorption heat exchange system 1B other than the above is the same as that of the absorption heat exchange system 1 (see FIG. 1).

In the absorption heat exchange system 1B configured as described above, the absorption heat pump cycle between the absorption liquid S and the refrigerant V in the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 is the absorption heat exchange system 1. It works in the same manner as (see FIG. 1). The high-temperature fluid FH flows into the heat source pipe 22 of the evaporator 20 via the high-temperature fluid introduction pipe 24, and also flows into the heat source pipe 32 of the regenerator 30 through the regenerator high-temperature fluid introduction pipe 34. The high-temperature fluid FH that has flowed into the heat source pipe 22 loses heat to the refrigerant liquid Vf, the temperature drops, and the high-temperature fluid FH flows out of the evaporator 20. On the other hand, the high-temperature fluid FH that has flowed into the heat source tube 32 loses heat to the dilute solution Sw, the temperature drops, and the regenerator 30 flows out. The high-temperature fluid FH flowing out of the evaporator 20 flows through the evaporator high-temperature fluid discharge pipe 28, the high-temperature fluid FH flowing out of the regenerator 30 flows through the high-temperature fluid discharge pipe 39, and both merge to form the absorption heat exchange system 1B. It is discharged to the outside. In the external heat exchange unit 88, the low-temperature fluid FL flowing out of the condenser 40 exchanges heat with the external heat source fluid FE to raise the temperature, and then flows into the heat transfer tube 12 of the absorber 10. In the absorption type heat exchange system 1B, when the high temperature fluid FH is used as steam, the latent heat of the high temperature fluid FH becomes large, and when all of this latent heat is used as a heat source, the high temperature fluid keeps the temperature of the heat source at the steam temperature. Since a large amount of heat can be extracted from the FH, a larger flow rate of the low temperature fluid FL than when the high temperature fluid FH is used as hot water (for example, the flow rate of the low temperature fluid FL is about 1/5 of the flow rate of the high temperature fluid FH) is taken out. Can be done. In this modification, the temperature of the low-temperature fluid FL introduced into the condenser 40 is higher than the temperature of the high-temperature fluid FH flowing out of the evaporator 20 and the regenerator 30 at the flow ratio of the low-temperature fluid FL to the high-temperature fluid FH. The temperature of the low temperature fluid FL flowing out of the absorber 10 can be made higher than the temperature of the high temperature fluid FH flowing out of the evaporator 20 and the regenerator 30. Further, in the absorption type heat exchange system 1B, when the high temperature fluid FH is used as steam, the flow rate of the high temperature fluid FH can be made smaller than the flow rate of the low temperature fluid FL (for example, the flow rate of the high temperature fluid FH is the low temperature fluid FL). The diameter of the pipe constituting the flow path of the high temperature fluid FH can be reduced, and the pump for conveying the high temperature fluid FH can be omitted. Further, in the absorption type heat exchange system 1B, the temperature of the high temperature fluid FH flowing into the regenerator 30 and the temperature of the high temperature fluid FH flowing into the evaporator 20 are the same, so that the high temperature fluid FH has passed through the evaporator 20. The high-temperature fluid FH flows into the evaporator 20 after passing through the regenerator 30 while increasing the amount of heat obtained by the low-temperature fluid FL as compared with the case of the absorption-type heat exchange system 1 (see FIG. 1) that later flows into the regenerator 30. It is possible to suppress an increase in the concentration of the absorbing fluid S in the regenerator 30 as compared with the case of the absorption type heat exchange system 1A (see FIG. 5). In the above description of the absorption type heat exchange system 1B, the low temperature fluid FL flowing out from the condenser 40 is heat-exchanged with the external heat source fluid EF in the external heat exchange unit 88, but the external heat exchange unit 88 and the external heat source fluid are exchanged. Instead of the pipe 89, a first heat exchange section 81 through which the high temperature fluid discharge pipe 39 passes was provided as in the absorption type heat exchange system 1 (see FIG. 1), and flowed out from each of the evaporator 20 and the regenerator 30 and merged. A high-temperature fluid discharge pipe 39 is arranged so as to guide the high-temperature fluid FH to the first heat exchange section 81, and the high-temperature fluid FH that flows out from the evaporator 20 and the regenerator 30 and merges with the high-temperature fluid FH that flows out from the condenser 40. It may be used for heat exchange with FL. In this way, the external heat source fluid FE becomes unnecessary.

Next, the absorption heat exchange systems 2B and 3B according to the second modification of the second embodiment and the third embodiment of the present invention will be described with reference to FIGS. 10 and 11. FIG. 10 is a schematic system diagram of the absorption heat exchange system 2B. FIG. 11 is a schematic system diagram of the absorption heat exchange system 3B. The main points of the absorption heat exchange systems 2B and 3B are that in the configuration of the absorption heat exchange system 2 (see FIG. 2) and 3 (see FIG. 3), the high temperature fluid FH is the absorption heat exchange system 1B (see FIG. 9). As described above, the evaporator 20 and the regenerator 30 flow in parallel. Along with this, in the absorption type heat exchange systems 2B and 3B, as in the absorption type heat exchange system 1B (see FIG. 9), the regenerator high temperature fluid introduction pipe 34 is branched from the high temperature fluid introduction pipe 24, and the regenerator high temperature fluid introduction pipe 34 is regenerated. The other end of the vessel high temperature fluid introduction pipe 34 is connected to the heat source pipe 32 of the regenerator 30. One end of the evaporator high temperature fluid discharge pipe 28 is connected to the end of the heat source pipe 22 of the evaporator 20 opposite to the end to which the high temperature fluid introduction pipe 24 is connected. The other end of the evaporator high temperature fluid discharge pipe 28 is connected to the high temperature fluid discharge pipe 39. The absorption heat exchange systems 2B and 3B are not provided with the external heat exchange unit 88 (see FIG. 9). Similar to the absorption heat exchange system 2 (see FIG. 2), the absorption heat exchange system 2B is provided with a second heat exchange unit 82, and the second heat exchange unit 82 corresponds to the fifth heat exchange unit. To do. However, in the absorption type heat exchange system 2B, the other end of the high temperature fluid discharge pipe 39 after the evaporator high temperature fluid discharge pipe 28 is connected is connected to the second heat exchange portion 82, and the evaporator high temperature fluid discharge pipe 28 is connected. The confluence of the flowing high-temperature fluid FH and the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 is configured to merge with the partial high-temperature fluid FHs that have flowed into the second heat exchange section 82 from the high-temperature fluid detour pipe 29. In that respect, it differs from the absorption type heat exchange system 2 (see FIG. 2). On the other hand, the absorption heat exchange system 3B is provided with a first heat exchange unit 81 and a second heat exchange unit 82, similarly to the absorption heat exchange system 3 (see FIG. 3), and the first heat exchange unit 81. Corresponds to the sixth heat exchange unit, and the second heat exchange unit 82 corresponds to the fifth heat exchange unit. The configuration of the absorption heat exchange system 2B other than the above is the same as that of the absorption heat exchange system 2 (see FIG. 2). The configuration of the absorption heat exchange system 3B other than the above is the same as that of the absorption heat exchange system 3 (see FIG. 3).

In the absorption heat exchange systems 2B and 3B configured in this way, the absorption heat exchange system 2 (see FIG. 2), except that the high temperature fluid FH flows in parallel with the evaporator 20 and the regenerator 30, respectively. It works in the same manner as in 3 (see FIG. 3). According to the absorption type heat exchange systems 2B and 3B, according to the ratio of the flow rate of the high temperature fluid FH flowing through the high temperature fluid introduction pipe 24 to the flow rate flowing into the heat source pipe 22 and the heat source pipe 32 and the flow rate flowing into the high temperature fluid bypass pipe 29. Since the temperature of the low-temperature fluid FL introduced into the heat transfer tube 12 of the absorber 10 can be adjusted, the temperature of the low-temperature fluid FL introduced into the heat transfer tube 12 of the absorber 10 can be adjusted to a predetermined temperature. , The ratio of the flow rate of the high temperature fluid FH flowing into the heat source pipe 22 and the heat source pipe 32 to the flow rate of the high temperature fluid FH flowing into the high temperature fluid detour pipe 29 can be set. The flow rate ratio in this case may be fixed by using pipes, orifices, or the like of a size adopted in accordance with predetermined values for each of the heat source pipe 22, the heat source pipe 32, and the high temperature fluid bypass pipe 29. It may be configured to be adjustable automatically or manually by using a valve or the like arranged at any position of each pipe 22, 32, 29.

Further, in the absorption type heat exchange system 2B, when the high temperature fluid FH is steam, the temperature of the partial high temperature fluid FHs which is steam and the heat flowing through the evaporator 20 and the regenerator 30 are taken away and at least a part of the temperature is taken. Is close to the temperature of the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39 after being condensed into condensed water. In the second heat exchange unit 82, the confluence of the partial high-temperature fluid FHs at temperatures close to each other and the high-temperature fluid FH containing condensed water is used as a heat source for heating the low-temperature fluid FL, so that the partial high-temperature fluid FHs Not only the steam of the above, but also the condensed water contained in the high temperature fluid FH can be used as a heating source, and the heat efficiency is good. Regardless of the example given here, the high-temperature fluid FH that has flowed through the evaporator 20 and the regenerator 30 and then through the high-temperature fluid discharge pipe 39 is not introduced into the second heat exchange section 82, and the low-temperature fluid FL is used. It may have a simple configuration that is not used as a heat source for heating.

In the absorption heat exchange system 3B, the second heat exchange unit 82 that introduces both the partial high temperature fluid FHs and the high temperature fluid FH as heat sources in the absorption type heat exchange system 2B is a second heat exchange unit 82 that uses only the partial high temperature fluid FHs as a heat source. It is divided into a heat exchange unit 82 and a first heat exchange unit 81 whose heat source is a fluid in which the partial high-temperature fluid FHs and the high-temperature fluid FH are merged. When the high-temperature fluid FH is used as steam, the temperature of the partial high-temperature fluid FHs, which is at least partially condensed into condensed water in the second heat exchange section 82, and the heat are taken away by flowing through the evaporator 20 and the regenerator 30. At least a part of it is condensed into condensed water, which is close to the temperature of the high temperature fluid FH flowing through the high temperature fluid discharge pipe 39. In the first heat exchange unit 81, the confluence of the partial high-temperature fluid FHs containing condensed water and the high-temperature fluid FH containing condensed water at temperatures close to each other is used as a heat source for heating the low-temperature fluid FL. The condensed water contained in the partial high-temperature fluid FHs and the condensed water contained in the high-temperature fluid FH can also be used as a heating source for heating the low-temperature fluid FL, and have good thermal efficiency. Further, when the partial high-temperature fluid FHs flowing out of the second heat exchange unit 82 and the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 are both condensed water in which steam is condensed, the second heat exchange unit 82 Is a heat exchanger using steam as a heat source, and the first heat exchange unit 81 is a heat exchanger using condensed water as a heat source. Then, the second heat exchange unit 82 and the first heat exchange unit 81 can be optimally configured according to the type of fluid of the heat source, and the thermal efficiency can be improved. Regardless of the example given here, the high-temperature fluid FH that flows through the evaporator 20 and the regenerator 30 and then flows through the high-temperature fluid discharge pipe 39 is introduced into the high-temperature fluid detour pipe 29 downstream of the second heat exchange section 82. Instead, it may have a simple configuration that is not used as a heat source for heating the low temperature fluid FL.

Next, with reference to FIG. 12, the absorption heat exchange system 4B according to the second modification of the fourth embodiment of the present invention will be described. FIG. 12 is a schematic system diagram of the absorption heat exchange system 4B. The main point of the absorption heat exchange system 4B is that in the configuration of the absorption heat exchange system 4 (see FIG. 4), the high temperature fluid FH is the evaporator 20 and the regenerator 30 like the absorption heat exchange system 3B (see FIG. 11). It is designed to flow in parallel with and. Along with this, in the absorption type heat exchange system 4B, as in the absorption type heat exchange system 3B (see FIG. 11), the regenerator high temperature fluid introduction pipe 34 is branched from the high temperature fluid introduction pipe 24, and the regenerator high temperature fluid introduction. The other end of the tube 34 is connected to the heat source tube 32 of the regenerator 30. One end of the evaporator high temperature fluid discharge pipe 28 is connected to the end of the heat source pipe 22 of the evaporator 20 opposite to the end to which the high temperature fluid introduction pipe 24 is connected. The other end of the evaporator high temperature fluid discharge pipe 28 is connected to the high temperature fluid discharge pipe 39. In the absorption heat exchange system 4B, the second heat exchanges heat between the low temperature fluid FL and the partial high temperature fluid FHs instead of the first heat exchange unit 81 provided in the absorption heat exchange system 4 (see FIG. 4). An exchange unit 82 is provided, and the second heat exchange unit 82 corresponds to the fifth heat exchange unit. In the absorption type heat exchange system 4B, the other end of the high temperature fluid discharge pipe 39 after the evaporator high temperature fluid discharge pipe 28 is connected is connected to the second heat exchange portion 82, and the high temperature flowing through the evaporator high temperature fluid discharge pipe 28. The confluence of the fluid FH and the high-temperature fluid FH flowing through the high-temperature fluid discharge pipe 39 is configured to merge with the partial high-temperature fluid FHs that have flowed into the second heat exchange section 82 from the high-temperature fluid detour pipe 29. The configuration of the absorption heat exchange system 4B other than the above is the same as that of the absorption heat exchange system 4 (see FIG. 4).

In the absorption heat exchange system 4B configured in this way, from the point where the high temperature fluid FH flows in parallel with the evaporator 20 and the regenerator 30, and from the high temperature fluid FH before being introduced into the evaporator 20 and the regenerator 30. It operates in the same manner as the absorption heat exchange system 4 (see FIG. 4) except that some of the branched high temperature fluids FHs are introduced into the second heat exchange section 82. Similarly to the absorption heat exchange system 2B (see FIG. 10), in the absorption heat exchange system 4B, when the high temperature fluid FH is steam, the high temperature fluid FH which is steam uses the evaporator 20 and the regenerator 30. It flows and loses heat, and at least part of it condenses into condensed water. In the second heat exchange unit 82, the condensed water contained in the high temperature fluid FH can also be used as a heating source for heating the low temperature fluid FL, so that the heat efficiency is high. According to the absorption type heat exchange system 4B, the temperature of the refrigerant liquid Vf flowing out from the refrigerant heat exchanger 99 rises and flows into the evaporator 20, so that the amount of heat required for evaporation in the evaporator 20 is suppressed. The amount of heat possessed by the high-temperature fluid FH flowing through the high-temperature fluid detour pipe 29, which has increased accordingly, can be used for heat exchange in the second heat exchange section 82, and the low-temperature fluid flowing into the absorber 10 can be used. While the temperature of the FL can be raised, the high temperature fluid FH flowing out of the refrigerant heat exchanger 99 is discharged from the absorption heat exchange system 4B due to a decrease in temperature, and the high temperature in the absorption heat exchange system 4B. The amount of heat recovered from the fluid FH can be increased. Regardless of the example given here, the high-temperature fluid FH that flows through the evaporator 20 and the regenerator 30 in parallel and then flows through the high-temperature fluid discharge pipe 39 is not introduced into the second heat exchange section 82, and the low-temperature fluid FL is not introduced. It may be a simple configuration that is not used as a heat source for heating. Further, the refrigerant heat exchanger 99 can be installed in the absorption heat exchange system 2B (see FIG. 10) or the absorption heat exchange system 3B (see FIG. 11).

In the absorption heat exchange systems 1, 2, 3, 4, 1A, 2A, 3A, 4A, 1B, 2B, 3B, and 4B described above, the high temperature fluid FH is either liquid (typically hot water) or steam. However, when steam is used, it is preferably applied to the absorption heat exchange systems 1B, 2B, 3B and 4B which are introduced in parallel with the evaporator 20 and the regenerator 30.

In the above description, the evaporator 20 is a full-liquid type, but it may be a flowing liquid film type. When the evaporator is of the flow-down liquid film type, a refrigerant liquid supply device for supplying the refrigerant liquid Vf is provided in the upper part of the evaporator can body 21, and in the case of the full liquid type, it is connected to the evaporator can body 21. The end of the refrigerant liquid pipe 45 may be connected to the refrigerant liquid supply device. Further, a pipe and a pump for supplying the refrigerant liquid Vf at the lower part of the evaporator can body 21 to the refrigerant liquid supply device may be provided.

In the above description, an example in which the absorber 10, the evaporator 20, the regenerator 30, and the condenser 40 in which the absorption heat pump cycle is performed is configured in a single stage has been described, but these may be configured in multiple stages. For example, when the absorption heat pump cycle is a two-stage temperature rise type, the absorber 10 and the evaporator 20 are represented by a high temperature absorber on the high temperature side (hereinafter, for convenience of explanation, the reference numeral “10” is added with “H”. ) And the high temperature evaporator (hereinafter, represented by adding "H" to the reference numeral "20" for convenience of explanation) and the low temperature absorber on the low temperature side (hereinafter, for convenience of explanation, the reference numeral "10" is represented by "L"). It may be divided into a low temperature evaporator (hereinafter, for convenience of explanation, it is represented by adding “L” to the reference numeral “20”). The high temperature absorber 10H has a higher internal pressure than the low temperature absorber 10L, and the high temperature evaporator 20H has a higher internal pressure than the low temperature evaporator 20L. The high temperature absorber 10H and the high temperature evaporator 20H typically communicate with each other at the upper part so that the vapor of the refrigerant V of the high temperature evaporator 20H can be moved to the high temperature absorber 10H. The low temperature absorber 10L and the low temperature evaporator 20L are typically communicated at the top so that the vapor of the refrigerant V of the low temperature evaporator 20L can be transferred to the low temperature absorber 10L. The low-temperature fluid FL flowing out of the heat transfer tube 42 of the condenser 40 does not flow into the low-temperature absorber 10L, but flows into the high-temperature absorber 10H and is heated by the high-temperature absorber 10H. The high temperature fluid FH is not introduced into the high temperature evaporator 20H, but is introduced into the low temperature evaporator 20L. The low temperature absorber 10L heats the refrigerant liquid Vf in the high temperature evaporator 20H with the absorbed heat when the absorbing liquid S absorbs the vapor of the refrigerant V moved from the low temperature evaporator 20L, and the refrigerant V in the high temperature evaporator 20H. The steam of the refrigerant V in the high temperature evaporator 20H moves to the high temperature absorber 10H and is absorbed by the absorption liquid S in the high temperature absorber 10H to heat the low temperature fluid FL. It is configured to.

1 Absorption type heat exchange system 10 Absorber 20 Evaporator 30 Regenerator 40 Condenser 80 Heat exchange part 81 1st heat exchange part 82 2nd heat exchange part 99 Refrigerant heat exchanger FH High temperature fluid FHs Partial high temperature fluid FL Low temperature fluid Sa Concentrated solution Sw Rare solution Ve Evaporator Refrigerant steam Vf Refrigerant liquid Vg Regenerator Refrigerant steam

Claims (18)

A condensing part that raises the temperature of the fluid to be heated by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
An evaporating unit that lowers the temperature of the heating source fluid by introducing the refrigerant liquid from the condensing unit and removing the latent heat of vaporization required when the introduced refrigerant liquid evaporates to become refrigerant vapor from the heating source fluid. ;
The refrigerant vapor is introduced from the evaporating portion, and the heated fluid whose temperature has risen in the condensing portion is introduced, and the introduced refrigerant vapor is absorbed by the absorbing liquid and released when it becomes a dilute solution having a reduced concentration. With an absorbing part that raises the temperature of the fluid to be heated introduced by the absorbed heat.
The dilute solution is introduced from the absorption unit, and the heat required for heating the introduced dilute solution to separate the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration is taken from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
The heated fluid after the temperature rises in the condensing portion and before the temperature rises in the absorbing portion, and the heating fluid that raises the temperature of the heated fluid before the temperature rises in the absorbing portion. It is equipped with a heat exchange unit that allows heat exchange between the two.
Due to the absorption heat pump cycle of the absorption liquid and the refrigerant, the internal pressure and temperature of the absorption unit are higher than those of the regeneration unit, and the internal pressure and temperature of the evaporation unit are higher than those of the condensing unit. Constructed;
Absorption heat exchange system. The heating source fluid after the temperature has dropped in the evaporation section is configured to be introduced into the regeneration section to heat the dilute solution in the regeneration section;
The absorption heat exchange system according to claim 1. A condensing part that raises the temperature of the fluid to be heated by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
An evaporating unit that lowers the temperature of the heating source fluid by introducing the refrigerant liquid from the condensing unit and removing the latent heat of vaporization required when the introduced refrigerant liquid evaporates to become refrigerant vapor from the heating source fluid. ;
The refrigerant vapor is introduced from the evaporating portion, and the heated fluid whose temperature has risen in the condensing portion is introduced, and the introduced refrigerant vapor is absorbed by the absorbing liquid and released when it becomes a dilute solution having a reduced concentration. With an absorbing part that raises the temperature of the fluid to be heated introduced by the absorbed heat.
The dilute solution is introduced from the absorption unit, and the heat required to heat the introduced dilute solution to separate the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration is taken from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
Heat exchange for heat exchange between the fluid to be heated before the temperature rises in the absorption unit and the heating fluid that raises the temperature of the fluid to be heated before the temperature rises in the absorption unit. With a department;
Due to the absorption heat pump cycle of the absorption liquid and the refrigerant, the internal pressure and temperature of the absorption unit are higher than those of the regeneration unit, and the internal pressure and temperature of the evaporation unit are higher than those of the condensing unit. Consists of ;
The heating source fluid after the temperature has dropped in the evaporation section is configured to be introduced into the regeneration section to heat the dilute solution in the regeneration section;
The heat exchange unit includes a second heat exchange unit that introduces a part of the heat source fluid branched from the heat source fluid before being introduced into the evaporation unit as the heating fluid. ;
Absorption heat exchange system. The flow rate of the heating source fluid flowing into the evaporating section and the heating source fluid flowing into the second heat exchange section so that the temperature of the heated fluid introduced into the absorbing section becomes a predetermined temperature. The ratio to the flow rate was set;
The absorption heat exchange system according to claim 3. The heat exchange unit includes a first heat exchange unit that introduces the heat source fluid after the temperature has dropped in the regeneration unit as the temperature rising fluid;
The absorption heat exchange system according to any one of claims 2 to 4. The temperature of the heated fluid introduced into the condensing portion is lower than the temperature of the heating source fluid flowing out of the regenerating portion, and the temperature of the heated fluid flowing out of the absorbing portion flows into the evaporating portion. The ratio of the flow rate of the heated fluid to the flow rate of the heating source fluid was set so as to be higher than the temperature of the heating source fluid;
The absorption heat exchange system according to any one of claims 2 to 5. The heating source fluid after the temperature has dropped in the regenerating section is configured to be introduced into the evaporating section in order to heat the refrigerant liquid in the evaporating section;
The absorption heat exchange system according to claim 1. A condensing part that raises the temperature of the fluid to be heated by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
An evaporating unit that lowers the temperature of the heating source fluid by introducing the refrigerant liquid from the condensing unit and removing the latent heat of vaporization required when the introduced refrigerant liquid evaporates to become refrigerant vapor from the heating source fluid. ;
The refrigerant vapor is introduced from the evaporating portion, and the heated fluid whose temperature has risen in the condensing portion is introduced, and the introduced refrigerant vapor is absorbed by the absorbing liquid and released when it becomes a dilute solution having a reduced concentration. With an absorbing part that raises the temperature of the fluid to be heated introduced by the absorbed heat.
The dilute solution is introduced from the absorption unit, and the heat required for heating the introduced dilute solution to separate the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration is taken from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
Heat exchange for heat exchange between the fluid to be heated before the temperature rises in the absorption unit and the heating fluid that raises the temperature of the fluid to be heated before the temperature rises in the absorption unit. With a department;
Due to the absorption heat pump cycle of the absorption liquid and the refrigerant, the internal pressure and temperature of the absorption unit are higher than those of the regeneration unit, and the internal pressure and temperature of the evaporation unit are higher than those of the condensing unit. Consists of ;
The heating source fluid after the temperature has dropped in the regenerating section is configured to be introduced into the evaporating section in order to heat the refrigerant liquid in the evaporating section;
The heat exchange unit includes a fourth heat exchange unit that introduces a part of the heat source fluid branched from the heat source fluid before being introduced into the regeneration unit as the heating fluid. ;
Absorption heat exchange system. The flow rate of the heating source fluid flowing into the regenerating section and the heating source fluid flowing into the fourth heat exchange section so that the temperature of the heated fluid introduced into the absorbing section becomes a predetermined temperature. The ratio to the flow rate was set;
The absorption heat exchange system according to claim 8. The heat exchange unit includes a third heat exchange unit that introduces the heat source fluid after the temperature has dropped in the evaporation unit as the temperature rise fluid;
The absorption heat exchange system according to any one of claims 7 to 9. The temperature of the heated fluid introduced into the condensing portion is lower than the temperature of the heating source fluid flowing out of the evaporating portion, and the temperature of the heated fluid flowing out of the absorbing portion flows into the regenerating portion. The ratio of the flow rate of the heated fluid to the flow rate of the heating source fluid was set so as to be higher than the temperature of the heating source fluid;
The absorption heat exchange system according to any one of claims 7 to 10. The heating source fluid introduced into the evaporation unit and the heating source fluid introduced into the regeneration unit are configured to be introduced in parallel;
The absorption heat exchange system according to claim 1. A condensing part that raises the temperature of the fluid to be heated by the heat of condensation released when the vapor of the refrigerant condenses into a refrigerant liquid;
An evaporating unit that lowers the temperature of the heating source fluid by introducing the refrigerant liquid from the condensing unit and removing the latent heat of vaporization required when the introduced refrigerant liquid evaporates to become refrigerant vapor from the heating source fluid. ;
The refrigerant vapor is introduced from the evaporating portion, and the heated fluid whose temperature has risen in the condensing portion is introduced, and the introduced refrigerant vapor is absorbed by the absorbing liquid and released when it becomes a dilute solution having a reduced concentration. With an absorbing part that raises the temperature of the fluid to be heated introduced by the absorbed heat.
The dilute solution is introduced from the absorption unit, and the heat required for heating the introduced dilute solution to separate the refrigerant from the dilute solution to obtain a concentrated solution having an increased concentration is taken from the heating source fluid. With a regenerator that lowers the temperature of the heating source fluid;
Heat exchange for heat exchange between the fluid to be heated before the temperature rises in the absorption unit and the heating fluid that raises the temperature of the fluid to be heated before the temperature rises in the absorption unit. With a department;
Due to the absorption heat pump cycle of the absorption liquid and the refrigerant, the internal pressure and temperature of the absorption unit are higher than those of the regeneration unit, and the internal pressure and temperature of the evaporation unit are higher than those of the condensing unit. Consists of ;
The heating source fluid introduced into the evaporation unit and the heating source fluid introduced into the regeneration unit are configured to be introduced in parallel ;
The heat exchange unit includes a fifth heat exchange unit that introduces a part of the heat source fluid branched from the heat source fluid before being introduced into the evaporation unit and the regeneration unit as the heating fluid. Consists of;
Absorption heat exchange system. The flow rate of the heating source fluid flowing into the evaporating part and the regenerating part and the flow rate of the heating source fluid flowing into the fifth heat exchange part so that the temperature of the fluid to be heated introduced into the absorbing part becomes a predetermined temperature. The ratio to the flow rate of the heating source fluid was set;
The absorption heat exchange system according to claim 13. The heat exchange unit introduces at least one of the heating source fluid after the temperature has dropped in the regenerating section and the heating source fluid after the temperature has dropped in the evaporating section as the heating fluid. Consists of an exchange;
The absorption heat exchange system according to any one of claims 12 to 14. The heat exchange section introduces at least one of the heating source fluid after the temperature has dropped in the regeneration section and the heating source fluid after the temperature has dropped in the evaporating section as the heating fluid. Consists of an exchange;
The heated fluid whose temperature has risen in the sixth heat exchange section is introduced into the fifth heat exchange section, and the heating source fluid whose temperature has dropped in the fifth heat exchange section is the sixth heat. It was configured to be introduced in the exchange;
The absorption heat exchange system according to claim 13 or 14. The temperature of the fluid to be heated introduced into the condensing section is lower than the temperature of the heating source fluid flowing out from the evaporating section and the regenerating section, and the temperature of the heated fluid flowing out from the absorbing section is the temperature of the evaporating section. And the ratio of the flow rate of the heated fluid to the flow rate of the heating source fluid was set so as to be higher than the temperature of the heating source fluid flowing into the regeneration unit;
The absorption heat exchange system according to any one of claims 12 to 16. A refrigerant heat exchanger that exchanges heat between the refrigerant liquid conveyed from the condensing section to the evaporation section and the heating fluid flowing out of the heat exchange section is provided;
The absorption heat exchange system according to any one of claims 1 to 17.

Images